[84480] in North American Network Operators' Group
mail service with no mx (was - Re: Computer systems blamed for feeble
daemon@ATHENA.MIT.EDU (Roy Badami)
Tue Sep 13 19:19:52 2005
Date: Wed, 14 Sep 2005 00:18:22 +0100
To: "william(at)elan.net" <william@elan.net>
Cc: Joseph S D Yao <jsdy@center.osis.gov>, nanog@nanog.org
In-Reply-To: <Pine.LNX.4.62.0509131441071.16184@sokol.elan.net>
From: Roy Badami <roy@gnomon.org.uk>
Errors-To: owner-nanog@merit.edu
william(at)elan> Could you elaborate on how firewall will
william(at)elan> determine if the connection is from mail server
william(at)elan> or from telnet on port 25?
Perhaps because most telnet clients will attempt telnet option
negotiation? If so one could avoid this by using a client such as
netcat...
-roy
